First, the mathematics of Luzhou senior high school entrance examination was too simple. Chengdu is about 1.5 times as difficult as Luzhou, and Beijing is about 3 times as difficult as Luzhou. In order to catch up with other regions, Luzhou has increased the difficulty of examination questions.

Second, in order to adapt to high school study. Mathematics in the college entrance examination is about three times more difficult than that in the middle school entrance examination this year. In other words, mathematics in this year's senior high school entrance examination is still mentally retarded in front of the college entrance examination. If the difficulty is not increased, high school will be more difficult.

Thirdly, Luzhou carried out the reform of senior high school entrance examination, and the math problem was the most difficult, so it acted as a pioneer of the reform, and the difficulty of the examination questions also increased rapidly.